The effects of suppressing primary sedimentation on nitrogen removal efficiency of a pre-denitrification system have been evaluedted for a large municipal wastewater treatment plant. Simulations have been carried out using the STOAT model. For both the process schemes with and without primary sedimentation, nitrification efficiencies are calculated for increasing influent loads of COD, total N and suspended solids. The sensitivity analysis shows that for usual carbon to nitrogen ratio in the raw influent both the process schemes allow the requested removal efficiencies, whereas for significantly high C/N ratios the scheme with primary sedimenattion is preferible.
Influence of Primary Sedimentation on Pre-Denitrification System Performances / Bastianutti, G. E. s. p. o. s. i. t. o. C.; G., Bortone; Pirozzi, Francesco; S., Sgroi. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - 44:1(2001), pp. 113-120.
Influence of Primary Sedimentation on Pre-Denitrification System Performances
G. E.s.p.o.s.i.t.o. C. Bastianutti;PIROZZI, FRANCESCO;
2001
Abstract
The effects of suppressing primary sedimentation on nitrogen removal efficiency of a pre-denitrification system have been evaluedted for a large municipal wastewater treatment plant. Simulations have been carried out using the STOAT model. For both the process schemes with and without primary sedimentation, nitrification efficiencies are calculated for increasing influent loads of COD, total N and suspended solids. The sensitivity analysis shows that for usual carbon to nitrogen ratio in the raw influent both the process schemes allow the requested removal efficiencies, whereas for significantly high C/N ratios the scheme with primary sedimenattion is preferible.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
